Hi everyone,
I'm doing SG-DMA for streaming data to LCD.
This is how I do,
SG-DMA memory-to-stream SOPC connection.
{
descriptor read and write-->DDR-SDRAM
read data -->DDR-SDRAM
}
created descriptor using malloc.
descriptor 0:
current descriptor pointer: descriptor[0]
next descriptor pointer: descriptor[1]
SOP(start of package) = 1
EOP(end of package) = 0
descriptor 1:
current descriptor pointer: descriptor[1]
next descriptor pointer: descriptor[0]
SOP(start of package) = 0
EOP(end of package) = 1
PARK MODE ENABLE
so this configuration should introduce a loop chain for the descriptor. However its not working unless i put the loop only inside 1 descriptor(current descriptor pointer: descriptor[0]
next descriptor pointer: descriptor[0]).
I just want to make the data stream continuous base on this 2 descriptor. Is it I lost something??
Thanks for any reply. :o
